iwlwifi: mvm: Add debugfs entry for Tx power limit

Add debugfs entry for showing the different Tx power restrictions that are
caused due to various reasons.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
index 5f37eab5008d7a9ebe1719204f024c9d70e01434..5c8a65de0e775a2327d392f617c4433bdd096f6d 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
@@ -6,7 +6,7 @@
  * GPL LICENSE SUMMARY
  *
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -32,7 +32,7 @@
  * BSD LICENSE
  *
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -190,6 +190,21 @@ static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
        return ret ?: count;
 }
 
+static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file,
+                                        char __user *user_buf,
+                                        size_t count, loff_t *ppos)
+{
+       struct ieee80211_vif *vif = file->private_data;
+       char buf[64];
+       int bufsz = sizeof(buf);
+       int pos;
+
+       pos = scnprintf(buf, bufsz, "bss limit = %d\n",
+                       vif->bss_conf.txpower);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+}
+
 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
                                        char __user *user_buf,
                                        size_t count, loff_t *ppos)
@@ -607,6 +622,7 @@ static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
        } while (0)
 
 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
+MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
@@ -641,6 +657,7 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
                MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
                                         S_IRUSR);
 
+       MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, S_IRUSR);
        MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, S_IRUSR);
        MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir,
                                 S_IRUSR | S_IWUSR);